Weft stop-motion for looms



(No Model.)

F.0.TUOKER.

WBFT STOP MOTION FOR LOOMS.

No. 269,745. Patented D .26, 1882.,

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rTEI) STATES PATENT OFFIca.

FREDERICK O. TUCKER, OF HARTFORD, CONNECTICUT.

WEFT STOP-MOTION FOR LOOMS.

SPECIFICATION forming part of Letters Patent No. 269,745, dated December 26, 1882.

Application filed January 16, 1882. (X0 model.) o

To all 'whom it may concern.-

Be it known that I, FREDERICK O. TUCKER, of Hartford, in the county of Hartford and State of Connecticut, have invented certain new and useful Improvements in Weft Stop- Motions for Looms; and I do hereby declare that the following is a full, clear, and exact description thereof, whereby a person skilled in the art can make and use the same, reference being had to the accompanying drawings, and to the letters of reference markedthereon.

Like letters in the figures indicate the same parts.

My improvement relates to a stop-motion or device upon a loom for the purpose of stopping it when the weft-thread is absent.

The object of my invention is to make a more simple and surely acting stop-motion than has heretofore been in use.

In the accompanying drawings, illustrating my invention, Figure 1 is a side view, partly in section, showing my improved mechanism attached to the breast-beam and lay of a loom. Fig. 2 shows a top view of the same, showing only' a portion of the breast-beam and lay. Fig. 3 is a front view of the part of the stopmotion attached to the lay. Fig. 4 is a crosssection through the working parts of the mechanism shown in Fig. 3. Fig. 5 is a view of the f knock-ofWlever and the tumbler which operates it from the opposite side of the machine from that shown in Fig. 1.

VA is the breast-beam.

3 is the lay.

C is a plate or frame, ordinarily made of cast metal, to which the working parts of the stop-motion connected with the lay are attached. This is made of suitable form to be attached to the lay of the loom.

D represents the feelers. They are attached to a block, E, which turns freely on the pin'F in the frame C.

G is a locking-bar, which is pivoted to the block E, and the lower end of which passes through a slot or guide in the frame 0, as shown in the section, Fig. 4.

H is a rocking lever, which serves the purpose of the ordinary dagger as commonly used in stop-motions. end, so as to hold the forward end up, and is It is weighted at its rear furnished with the projection H, for striking against the tumbler and movingit so as to stop the loom when the dagger is looked, as will be described. It is furnished with a slot, H for locking'it, as will be described.

J is a. tumbler, which is weighted at its forward end, and turns upon a pivot secured by an adjustable nut to the arm or stand K. This tumbler is furnished with a projection, J, to be operated upon by the dagger. The arm K is firmly attached to the breast-beam A.

L is the knock-off lever. It is pivoted to the arm K at L, and its rear or longer end rests upon the pin M, which is a continuation of the center pin or pivot ot' the tumbler J. j

N is a stud upon the tumbler J, for raising the end of the lever L when the top of the tumbler is pushed forward.

O is a pin in the tumbler J, which strikes against-the lever L when the tumbler is tipped backward and-limits it movement.

P is a. cord or other suitable flexible connection,attached to'the block E and to the spring Q for the purpose of raising the feelers at each backward movement of the lay. The spring Q, is attached to the breast-beam, and is arranged to tighten the cord P just before the lay reaches its most rearward position. This raises the feelers, and the spring then yields so as to hold them up for the required time for the shuttle to pass under them.

The loom is stopped by the movementof the short arm of the lever L. It is shown in the drawings as operating against the sliding pin R, which pushes the shipping-lever S so as to shiftthe belt. The lever Sis pivoted to the under side of the breast-beam, and its farther shifting the belt; or it may move a bar carrycommonly used upon looms provided with stopmotions.

The operation of my invention is as follows: At every movement of the lay backward the cord P tightens, and the feelers are raised on the return of the lay. If the weft-thread is present, the feelers are held up by the thread, and the locking-bar G is held up out of the slot H in the dagger H. The dagger then yields and passes over the top of the projecend is funished with a fork for embracing and.

ing the fork in any of the ordinary Ways now zoo jection J yields by tilting backward and altion J. If the weft-thread is absent, the dag- I and the locking-bar G with the dagger H, havger is locked by the bar Gr dropping into the slot H and the projection J is pushed forward by the dagger, so that the stud N upon the tumbler raises the lever L and stops the loom. \Vhen the dagger passes back the prolows the dagger to pass. The tumbler falls back into position by means of the heavier forward end. The projecting guard connected with the top of the frame 0 is not a part of the present invention, being embraced in another pending application filed by 1118 April 21, 1880.

What I claim as my invention is- 1. The combination of the feeler-block ing the notch H as a locking device for said dagger, substantially as described.

2. The combination of the feelers and block D E, the spring-cord 1 Q, the locking-bar G, the dagger H, the tumbler J, and the lever L with the frame 0, adapted to be attached to the lay, and the arm K, adapted to be attached to the breast-beam ot' a loom, substantially as described.

FREDERICK 0. TUCKER \Vitnesses:

EDWIN F. Dntooic, THEO. G. ELLIS. 

